要查看跟踪数据，必须转储缓冲区并进行格式化。

To examine the trace data, you must snap or dump and then format the buffers. The snapping of the buffers occurs automatically in any of the following scenarios.

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例如，如果某个线程没有被调度，当转储缓冲区时它的跟踪信息仍然是可用的。

For example, if one particular thread is not being dispatched, its trace information is still available when the buffers are dumped or snapped.

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收集选项包括打开或关闭跟踪；指定跟踪缓冲区大小；指定或更改跟踪选项；转储跟踪信息；以及清除跟踪缓冲区。

Collection options include turning a trace on or off; specifying the trace buffer size; specifying or changing trace options; dumping a trace; and clearing the trace buffer.

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